In this video, we compare the pressure control of the new Graco XT models with previous models of Graco airless machines. Graco calls the new pressure control RapidResponse Control and promises significantly lower pressure fluctuations than previous Graco models or models from other manufacturers on the market.
Pressure control comparison – Old versus new
For comparison, we’re using the previous model, the old Graco ST Max II 495 PC Pro, and testing the new Graco Ultra 495 XT. Interior wall paint is sprayed at 120 bar using a Graco LP 517 nozzle. We then pull the trigger on the airless gun to check the pressure drop. Although a digital pressure gauge shows the pressure on the display, we also fitted an analogue pressure gauge to the Graco ST MAX II 495 PC because we noticed minor measurement inaccuracies on the digital gauge. We did the same with the Graco Ultra 495 XT, but we didn’t notice any measurement inaccuracies here.
Pressure fluctuation on Graco Ultra XT
Test with the old Graco ST Max II 495 PC Pro
The old comes before the new, so we start with the old Graco ST Max II 495 PC Pro. We set the pressure at 120 bar and start spraying. You can see the pressure drop from 120 bar to less than 100 bar. So there’s a difference of more than 20 bar between the dynamic pressure and the spraying pressure.
Pressure drop test on the Graco ST Max II 495 PC Pro
Test with the new Graco Ultra 495 XT
We also set the pressure to 120 bar with the new Graco Ultra 495 XT, and then started work. When we switch from dynamic pressure to spraying pressure, the pressure only drops by 3 bar.
Graco Ultra 495 XT pressure drop test
Summary of tests
In the comparison test between the previous model, the Graco ST Max II 495 PC Pro and the new Graco Ultra 495 XT, a clear difference in pressure control was noticeable. On the old model, the difference between dynamic pressure and spraying pressure was around 20 bar, while on the new Ultra 495 XT it was just 3 bar. The effect of the new RapidResponse Control pressure control is clearly visible, reducing pressure fluctuations from over 20 bar to 3 bar.
Comparison of pressure drop between Graco ST MAX II 495 PC Pro and Graco Ultra 495 XT
Benefits of RapidResponse Control
But what are the benefits of this improved pressure control? If you spray with more pressure, more paint will be pushed through the nozzle. As a result, more product penetrates the surface. If you spray with less pressure, less paint is pushed through the nozzle and less material ends up on the surface. Large fluctuations in pressure in the airless can lead to more uneven spraying and paint application on the same surface, as sometimes more or less paint is sprayed. The new RapidResponse pressure control provides a more uniform spray pattern, a more uniform paint application and therefore a more uniform, better quality surface.
More precise pressure setting with the Ultra 495 XT
During the test, we found that the pressure setting on the new Ultra XT models also works much more precisely than on previous models. In low-pressure mode, the pressure can be set precisely to the bar. In the previous model of Graco ST Max II 495 PC Pro or in other models on the market, this control is less precise.
More precise pressure adjustment on Graco Ultra XT models
Improved pressure control allows the desired pressure to be set precisely, creating optimum working conditions. Optimum pressure adjustment is a prerequisite for obtaining a high-quality spray jet and avoiding paint mist.
Call us or send us an e-mail if you have any further questions about the Graco XT Series. In our training centre, various models of the Graco XT series are available for testing. So don’t hesitate to make an appointment if you’d like to see the new Graco Ultra XT models for yourself.
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For any further questions or if you would like to get your hands on one of these products seen in this article, you can contact us on +49 (0) 30 220 15436, fill out our contact form or email us. If you wish to purchase one of the products mentioned above, you can check them out in our online store. You can also visit us at our service base during office hours.
